Posted by Ronnie Budd on February 18, 2017 at 10:08:33 from (184.53.34.126):
In Reply to: Messing with propane. posted by jeffcat on February 16, 2017 at 20:27:02:
These videos and discussion are always entertaining, but I get amused by people who think propane is so dangerous. I am a retired fuel hauler and have hauled gasoline, diesel, ethanol, and propane for many years. Propane and diesel are the safest to transport and store. Gasoline and ethanol are more dangerous. In fact, in over 20 years with a company, the only fire and explosion the company ever had was with a gasoline storage tank and a diesel truck. This occurred in the winter when a gasoline storage tank vent froze shut in an ice storm. The truck was pumping gasoline into the tank. These storage tanks are NOT designed to take pressure. The frozen vent caused the tank to pressurize, rupture, spray gas everywhere, which the running truck engine ignited when it ran away and blew up. The whole truck, storage plant, and driver were incinerated.
There are many examples of gasoline and diesel transport tankers being ruptured in traffic accidents and leaking the contents. It's rare when an overturned propane tanker leaks. There both primary and secondary safety valves, including internal excess flow valves that are designed to close in the event that the external valves fail for any reason. In fact, the only example I ever saw was when a tanker driver tried to beat a train and didn't make it. The train hit the tanker in the side and split it. In that event, I'm not sure the type of fuel in the tanker would have mattered all that much.
We have had vandals shoot our propane tanks with deer rifles. They dented but did not penetrate. Those tanks are thick.
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